Skip to main content

Updated Compilation of VS30 Data for the United States


Start Date
Publication Date


McPhillips, D.F., Herrick, J.A., Ahdi, S., Yong, A.K., and Haefner, S., 2020, Updated Compilation of VS30 Data for the United States: U.S. Geological Survey data release,


VS30, the time-averaged shear-wave velocity (VS) to a depth of 30 meters, is a key index adopted by the earthquake engineering community to account for seismic site conditions. VS30 is typically based on geophysical measurements of VS derived from invasive and noninvasive techniques at sites of interest. Owing to cost considerations, as well as logistical and environmental concerns, VS30 data are sparse or not readily available for most areas. Where data are available, VS30 values are often assembled in assorted formats that are accessible from disparate and (or) impermanent Websites. To help remedy this situation, we compiled VS30 measurements obtained by studies funded by the U.S. Geological Survey (USGS) and other governmental agencies. [...]


Attached Files

Click on title to download individual files attached to this item.

VS30 compilation 2020.csv 1.2 MB text/csv


Data were compiled in order to support site assessments for seismic hazard as well as earthquake ground motion research in the United States. This compilation expands on previously published work.



  • USGS Data Release Products



Additional Information


Type Scheme Key
DOI doi:10.5066/P9H5QEAC

Item Actions

View Item as ...

Save Item as ...

View Item...